Adjective
subfamilial (not comparable)
Of or pertaining to a subfamily.
According to the Melbourne Code, the subfamilial name Ixoroideae should be replaced by Dialypetalanthoideae. Source: Internet
However, Dialypetalanthus is morphologically quite aberrant in Rubiaceae and if it should be excluded from Rubiaceae, the subfamilial name remains Ixoroideae. Source: Internet
The last subfamilial classification solely based on morphological characters divided Rubiaceae into four subfamilies: Cinchonoideae, Ixoroideae, Antirheoideae, and Rubioideae. Source: Internet